From: Marek Vasut <marek.va...@gmail.com>
Signed-off-by: Marek Vasut <marek.va...@gmail.com>
Cc: Detlev Zundel <d...@denx.de>
Cc: Fabio Estevam <fabio.este...@freescale.com>
Cc: Stefano Babic <sba...@denx.de>
Cc: Wolfgang Denk <w...@denx.de>
---
arch/arm/cpu/arm926ejs/mx28/spl_power_init.c | 100 +++++++++++++++++++++++---
1 file changed, 92 insertions(+), 8 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
index ac942b4..4b09b0c 100644
--- a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
@@ -45,11 +45,11 @@ void mx28_power_clock2pll(void)
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
- writel(CLKCTRL_PLL0CTRL0_POWER,
- &clkctrl_regs->hw_clkctrl_pll0ctrl0_set);
+ setbits_le32(&clkctrl_regs->hw_clkctrl_pll0ctrl0,
+ CLKCTRL_PLL0CTRL0_POWER);
early_delay(100);
- writel(CLKCTRL_CLKSEQ_BYPASS_CPU,
- &clkctrl_regs->hw_clkctrl_clkseq_clr);
+ setbits_le32(&clkctrl_regs->hw_clkctrl_clkseq,
+ CLKCTRL_CLKSEQ_BYPASS_CPU);
}
void mx28_power_clear_auto_restart(void)
@@ -455,9 +455,14 @@ void mx28_power_enable_4p2(void)
mx28_power_init_4p2_regulator();
/* Shutdown battery (none present) */
- clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK);
- writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
- writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr);
+ if (!mx28_is_batt_ready()) {
+ clrbits_le32(&power_regs->hw_power_dcdc4p2,
+ POWER_DCDC4P2_BO_MASK);
+ writel(POWER_CTRL_DCDC4P2_BO_IRQ,
+ &power_regs->hw_power_ctrl_clr);
+ writel(POWER_CTRL_ENIRQ_DCDC4P2_BO,
+ &power_regs->hw_power_ctrl_clr);
+ }
mx28_power_init_dcdc_4p2_source();
@@ -515,6 +520,50 @@ void mx28_powerdown(void)
&power_regs->hw_power_reset);
}
+void mx28_batt_boot(void)
+{
+ struct mx28_power_regs *power_regs =
+ (struct mx28_power_regs *)MXS_POWER_BASE;
+
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_PWDN_5VBRNOUT);
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_ENABLE_DCDC);
+
+ clrbits_le32(&power_regs->hw_power_dcdc4p2,
+ POWER_DCDC4P2_ENABLE_DCDC | POWER_DCDC4P2_ENABLE_4P2);
+ writel(POWER_CHARGE_ENABLE_LOAD, &power_regs->hw_power_charge_clr);
+
+ /* 5V to battery handoff. */
+ setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+ early_delay(30);
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+
+ writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr);
+
+ clrsetbits_le32(&power_regs->hw_power_minpwr,
+ POWER_MINPWR_HALFFETS, POWER_MINPWR_DOUBLE_FETS);
+
+ mx28_power_set_linreg();
+
+ clrbits_le32(&power_regs->hw_power_vdddctrl,
+ POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG);
+
+ clrbits_le32(&power_regs->hw_power_vddactrl,
+ POWER_VDDACTRL_DISABLE_FET | POWER_VDDACTRL_ENABLE_LINREG);
+
+ clrbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_VDDIOCTRL_DISABLE_FET);
+
+ setbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_PWD_CHARGE_4P2_MASK);
+
+ setbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_ENABLE_DCDC);
+
+ clrsetbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
+ 0x8 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
+}
+
void mx28_handle_5v_conflict(void)
{
struct mx28_power_regs *power_regs =
@@ -539,6 +588,11 @@ void mx28_handle_5v_conflict(void)
mx28_powerdown();
break;
}
+
+ if (tmp & POWER_STS_PSWITCH_MASK) {
+ mx28_batt_boot();
+ break;
+ }
}
}
@@ -595,12 +649,42 @@ void mx28_switch_vddd_to_dcdc_source(void)
void mx28_power_configure_power_source(void)
{
+ int batt_ready, batt_good;
+ struct mx28_power_regs *power_regs =
+ (struct mx28_power_regs *)MXS_POWER_BASE;
+ struct mx28_lradc_regs *lradc_regs =
+ (struct mx28_lradc_regs *)MXS_LRADC_BASE;
+
mx28_src_power_init();
- mx28_5v_boot();
+ batt_ready = mx28_is_batt_ready();
+
+ if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
+ batt_good = mx28_is_batt_good();
+ if (batt_ready) {
+ /* 5V source detected, good battery detected. */
+ mx28_batt_boot();
+ } else {
+ if (batt_good) {
+ /* 5V source detected, low battery detceted. */
+ } else {
+ /* 5V source detected, bad battery detected. */
+ writel(LRADC_CONVERSION_AUTOMATIC,
+ &lradc_regs->hw_lradc_conversion_clr);
+ clrbits_le32(&power_regs->hw_power_battmonitor,
+ POWER_BATTMONITOR_BATT_VAL_MASK);
+ }
+ mx28_5v_boot();
+ }
+ } else {
+ /* 5V not detected, booting from battery. */
+ mx28_batt_boot();
+ }
+
mx28_power_clock2pll();
mx28_init_batt_bo();
+
mx28_switch_vddd_to_dcdc_source();
}
--
1.7.10
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